Oil-lifting device



/ rality of inlet jets,

'cient in use,

`the flow of the inner casing and the flow of the pressure PatentedSept. 29, 1925'.

CHARLES s. sTEArr, or EANGEE, TEXAS.

oIL-LIETING nEvIoE.

Application mea December 27, 1922. serial No. 609,244.

To zZZ whom 'it may concern:

Be it known that I, CHARLES S. STRAIT, a citizen of the United Statesresiding at Ranger, in thelcounty of Eastland and State of Texas, haveinvented certain new and useful Improvements in an Oil-Lifting Device,of which the following is a specification.

This invention relates to wells and the primary object'of the inventionis to provide novel means for elevating ina deep well, a column ofliquid such as oil or water, said means employing pressure to lift theliquid column in lieu of a pump structure.

Another object of the invention is to provide an inner casing arrangedwithin the ordinary well casing provided witlraplufor permitting theentrance of pressure into the inner casing for forming means for liftingthe liquid column. j v

A further object of the invention is' to provide an inner casingdisposed in concentric relation to the outer well casing embodying anupper inlet jet and a lower inlet jet and a packing disposed in fluidtight engagement with the inner and outer casings between the upper andlower jets, the jets forming means -for permitting the utiliza- -tion ofexternalpressure and internal pressure for lifting a'fluid or liquidcolumn.

A further object of the invention is the provision'of novel valve meanscarried by the inner casing and the jets for controlling liquid columnthrough the through the jets.

A still further object of the invention 'is to provide an improveddevice for elevating a liquid column in a deep well of the abovecharacter,

one will be simple and easy to manufacture, and one which can beincorporated with a dee-p well at a minimum exense.

lVit-h these and lother objects in view the invention consists in thenovel construction, arrangement and formationof parts, as will behereinafter more specifically described, claimed and illustrated intheaccompanying drawings, forming a part of this specification, in whichdrawings:

Fi re 1 1s a longitudinal section through Va wel casing showing theimproved means for lifting a liquid column incorporated therewith.

the jets forming meansl ltion to one another.

which will be durabley and etti- Figure 2 is an enlargedvdetaillongitudinal section through one of the jets utilized for permitting theentrance of pressure into the inner casing for facilitating the liftingof the liquid column. v

Referring to the drawings in detail, wherein similar referencecharacters designate corresponding parts throughout the several viewsthe letter A generally indicates the outer or ordinary well casing and Ban inner casing through which the liquid column is adapted t0 flow. Asclearly shown in Figure 1 of the drawings the inner casing B is disposedin concentric relation to `the-o`uter casing A and has connection withthe outer casing A by means of a head or cap 5, which establishes fluidtight connection between the upper ends of the inner and outer casings Band A. As is also clearlyv shown in Figure 1 of the drawings the innercasing B extends through the headof the well casing. The head 5 as showninl cludes inner and outerspaced collars 6 and .7 and a connectingannular portion 8. The inner and outer collars 6 and 7 can be providedwith threads for engaging. the inner and outer casings B and A. Theupper end of the casing A is adapted to protrude from out of the well'and has communicating therewith a pressure pipe 10, by means of whichexternal pressure is introduced into the outer casing A, for a purpose,which will be hereinafter more fully described.

The inner casing vB has interposed in its length upper and lowerenlarged housings 11 and`12 which are disposed in; spaced rela- Thesehousings 11 and 12 are of substantially the same construction and eachterminates in upper and lower screw-threaded collars 13 for engagingthe" sections of the inner casing B. The upper 'casing 11 supports aninlet jet 14, which will be known'as the compound jet and the lowercasing 12 supports a similar inlet jet/ 15,

which will be known as the simple jet. The

jets howeverare of substantially the same construction and functionpractically in the same manner.

It is desirable to lestablish fluid tight connection between the outerand inner casings A and B between the upper and lower housings 11 and 12and in order to accom lish this' any suitable preferred type of pac ing16 is provided. This` packing lengages end of the the inner casing B andthe inner surface of the outer casing A. Directly below the packing 16the inner casing B has interposed therein a check valve 17 which asshown includes a valve casing 18 and an upwardly opening valve 19. Thischeck valve 17 isl located above the lower housing 12. The lower end ofthe casing A is provided with a plurality of perforations 20 forpermitting the entrance of li uid into the same and this pipe isnown asthe inlet tube or anchor. f

As each of the inlet jets 14 .and 15 are of substantially the sameconstruction a descriptionAof one is deemed sullicient for both. Asclearly shown in Figure 2 of the drawings the inlet jets 'each include atubular body 21 having communication with its respective housingadjacent `to thelower end thereof as at 22. This body 21 can beconnected with the housing in any preferred manner or can be formedintegral therewith. The tubular body 21 extends inwardly at an anglefrom the lower end of this housingl and terminates substantially inalignment with the axial center thereof slightly below the upper colla-rthereof. As clearly shown the upper end of the tubular body 21 isslightly contracted as at 2 3 inorder that the jets of compressed air orother fluids under pressure will flow with considerable force into thehousing. If so desired the tubular body 21 can'have interposed in itslength a suitable check valve 24. This valve 24 as shown includes avalve casing 25 having formed intermediate its ends a valve seat 26 onwhich is adapted to normally seat a ypivoted, flat valve 27.

The lower inlet jet 15 is adapted to make use of the internal pressurein the well, if

there be s uch, whilethe upper inlet jet 14 is adapted to make use ofexternal pressure ilitroduced into the well through the pipe Inoperation of the improved liquid lifting device compressed air or otherfluid under pressure 1s introduced into the well casing A through thepipe 10. As" shown this compressed air or other fluid under pressurewill flow down the casing and into the jet 14 with considerable force,and then flow u into the inner casing B. It is evident t at theinflowing compressed air 0r other fluid under pressure wilLcreate asuc-` tion below the housing 11 and thus suck the liquid into the casin'A through the openings 20 and permit fting the liquid column. Thesuction will of course unseat the check valve 17 and permit the freeflow of the liquid past the same. In case the compressed air shouldfailit is evident that the weight of the liquid will automatically close thecheck valve 17 and the check Valve 24 in the inlet jet `14. It has beenfound that often there is considerable pressure within a well,especially an oil well. It is evident that if there is any internalpressure within the well that this pressure will flow into the inlet jet15 thus creating a suction in the casing B above the inlet tube oranchor thereof and thus will suck in the oil or the liquid beingelevated and elevate theliquid column to the top of the well. Thus itcan be seen that these two jets 14 and l5 will co operate with oneanother to lift the liquid Column. i

W hile any arrangement of the jets 14 and 15 can be had, as shown inFigure 1 of the drawings the same may extend in opposite diagonalrelation to one another.

From the foregoing description it can be seen that an improved means hasbeen provided for elevating a liquid column by external and internalpressure.

Changes in details maybe made without departing from the. spirit or thescope of this invention.

Having thus described my invention what I claim as new is A means forliftin a liquid column in a deep Well comprising inner and outer spacedcasings, the lower end of the inner casing having liquid inlets formedtherein, a head connectin the inner and outer casings together in uidtight relation, a packing disposed about the inner casing andestablishing fluid tight connection between the inner and outer casings,means for introducing pressure into the outer casing above said packing,a tubular housing disposed within the length of the inner casing abovesaid packing having an inwardly extending inlet pressure jetcommunicating with the interior and exterior thereof for permitting theflow of pressure from the outer casing into the inner casing, and atubular housing disposed within the length of the inner casino' belowsaid packing having an inward extending inletjet communicating with theinterior and the-exterior thereof for permitting the flow of liquid fromthe outer casing into the inner casing.

In testimony whereof I allix my signature.

CHARLES S. STRAIT.

